Manage Harness deployment freeze windows via MCP. Create, list, get, update, and delete project-level freeze windows; toggle them Enabled/Disabled; and get or enable/disable the project-level global freeze. Use when asked about freeze windows, deployment freezes, change freezes, release blackouts, maintenance windows, holiday freezes, or to pause deployments. Trigger phrases: freeze window, deployment freeze, change freeze, release blackout, maintenance window, holiday freeze, pause deployments, block pipeline execution, global freeze.